Sony CDX-A250 / CDX-A250EE Service Manual ▷ View online
33
CDX-A250/A250EE
Pin No.
Pin Name
I/O
Pin Description
52
KEY ACK
I
Key acknowledgment detect signal input
53
TU ATT IN
I
Tuner mute zero cross detect signal input (AEP, UK model only)
54
BU IN
I
Back-up power supply detect signal input
55
NCO
O
Not used. (Open)
56
DAVN
I
RDS data block synchronized detect signal input (AEP, UK model only)
57
NCO
O
Not used. (Open)
58
UNISI
I
SONY bus data signal input
59
UNI SO
O
SONY bus data signal output
60
UNI SCK
O
SONY bus clock signal output
61
611 SEL
I
Mechanism deck select signal input
62
WMA
I
WMA select signal input
63
NCO
O
Not used. (Open)
64
SIRCS
I
Remote control signal input
65 to 67
NCO
O
Not used. (Open)
68
FLASH W
I
Memory mode select signal input
69, 70
NCO
O
Not used. (Open)
71
RC IN1
I
Rotary commander shift key signal input
72
ACC IN
I
Accessory power supply detect signal input
73
TEST IN
I
Test mode detect signal input
74
TEL ATT
I
Telephone attenuate detect signal input
75
NCO
O
Not used. (Open)
76
XKEY ON
O
A/D converter power supply control signal output
77
RESET
I
CPU reset signal input
78
NCO
O
Not used. (Open)
79
XOUT
O
Sub-clock output (32.768 kHz)
80
XIN
I
Sub-clock input (32.768 kHz)
81
VSS1
—
Ground pin
82
OSC IN
I
Main-clock input (3.68 MHz)
83
OSC OUT
O
Main-clock output (3.68 MHz)
84
VCC3
—
Power supply pin (+3.3 V)
85
DEMOSEL
I
DEMO select signal input
86
ATT
O
Audio mute control signal output
87
BUS ON
O
Bus on signal output
88
SYS RST
O
System reset signal output
89
EJECT OK SW
O
Eject OK signal output
90 to 92
NCO
O
Not used. (Open)
93
Z-MUTE
I
CD zero cross mute detect signal input
94 to 97
NCO
O
Not used. (Open)
98
CD ON
I
CD mechanism power control request signal input
99
CDM ON
I
CD mechanism deck power control request signal input
100
NCO
O
Not used. (Open)
34
CDX-A250/A250EE
SECTION 4
EXPLODED VIEWS
Ref. No.
Part No.
Description
Remark
4-1. MAIN SECTION
Ref. No.
Part No.
Description
Remark
The components identified by
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
NOTE:
• The mechanical parts with no reference
• The mechanical parts with no reference
number in the exploded views are not supplied.
• Items marked “*” are not stocked since
they are seldom required for routine service.
Some delay should be anticipated
when ordering these items.
Some delay should be anticipated
when ordering these items.
• -XX and -X mean standardized parts, so
they may have some difference from the
original one.
original one.
• Color Indication of Appearance Parts
Example :
KNOB, BALANCE (WHITE) ... (RED)
Parts Color Cabinet’s Color
• Accessories are given in the last of this
parts list.
• Abbreviation
EE
: East European model
EA : Saudi Arabia model
CH : Chinese model
IND : Indian model
CH : Chinese model
IND : Indian model
R
R
1
X-2059-813-1 PANEL, SUB ASSY
2
3-042-244-11 SCREW (T)
3
X-3383-739-1 LOCK ASSY (S)
4
A-1137-810-A MAIN BOARD, COMPLETE (E,CH,IND)
4
A-1137-821-A MAIN BOARD, COMPLETE (AEP,UK)
4
A-1137-859-A MAIN BOARD, COMPLETE (A250EE)
4
A-1152-847-A MAIN BOARD, COMPLETE (EA)
5
2-050-124-01 SCREW +BTT 2.6X5
6
1-776-206-21 CORD (WITH CONNECTOR) (POWER) (E,EA,CH)
6
1-831-838-11 CORD (WITH CONNECTOR) (ISO) (POWER)
(AEP,UK,EE)
6
1-833-100-11 CORD (WITH CONNECTOR) (POWER) (IND)
6
1-833-762-11 CONNECTION CORD FOR AUTOMOBILE (POWER)
(for Maruti Suzuki) (IND)
7
2-021-848-01 SHEET (TU), GROUND
FU601
1-532-877-11 FUSE (BLADE TYPE) (AUTO FUSE) 10A
TU1
A-3220-961-B TUNER UNIT (TUX-032)
#1
7-685-792-09 SCREW +PTT 2.6X6 (S)
#2
7-685-790-01 SCREW +PTT 2.6X4 (S)
#3
7-685-793-09 SCREW +PTT 2.6X8 (S)
not supplied
not supplied
FU601
not supplied
TU1
not supplied
#1
#1
#1
#3
#2
#1
MG-611WA-186//Q
A
A
B
B
1
2
3
5
7
6
A
4
Ver. 1.2
35
CDX-A250/A250EE
4-2. FRONT PANEL SECTION
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
51
A-1137-812-A PANEL ASSY, FRONT (E,EA,CH,IND)
51
A-1137-823-A PANEL ASSY, FRONT (AEP,UK)
51
A-1137-861-A PANEL ASSY, FRONT (A250EE)
52
X-2102-797-1 BUTTON ASSY (S)
53
2-639-881-01 SPRING (RELEASE)
54
2-634-993-02 PLATE (CD-R), LIGHT GUIDE
55
2-635-033-01 PLATE (RING), LIGHT GUIDE
56
2-634-994-02 PLATE (CD-L), LIGHT GUIDE
57
X-2102-815-2 PANEL (SV) ASSY, FRONT (E,EA,CH,IND)
57
X-2102-816-2 PANEL (SV) ASSY, FRONT (AEP,UK)
57
X-2102-818-2 PANEL (SV) ASSY, FRONT (A250EE)
58
X-2103-036-2 KNOB (SV) ASSY
59
X-2102-503-1 CASE ASSY (for FRONT PANEL)
60
1-780-320-11 CONDUCTIVE BOARD, CONNECTION
61
2-634-998-01 ILLUMINATOR (LCD)
62
2-634-997-01 PLATE (LCD), LIGHT GUIDE
63
3-250-543-21 SCREW (+B P-TITE M2)
64
2-634-951-01 PANEL, FRONT BACK
67
3-251-320-01 EMBLEM (NO.2.5), SONY
LCD901 1-805-936-12 DISPLAY PANEL, LIQUID CRYSTAL
RE901
RE901
1-478-474-21 ENCODER, ROTARY
(PUSH DIAL SELECT/VOLUME)
LCD901
not supplied
not supplied
not supplied
not supplied
RE901
51
53
60
61
62
64
63
63
not supplied
not supplied
not supplied
not supplied
not supplied
52
54
55
56
58
67
57
59
Ver. 1.2
36
CDX-A250/A250EE
4-3. CD MECHANISM SECTION (1)
(MG-611WA-186//Q)
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
101
A-3372-444-C CHASSIS (T) SUB ASSY
102
3-253-729-11 SPRING (LR), TENSION COIL
103
3-257-892-12 SPRING (DAMPER), COIL (GREEN)
104
3-257-892-01 SPRING (DAMPER), COIL (NATURAL)
105
2-345-767-11 SPRING (KF60), TENSION
106
3-259-033-01 DAMPER (S)
107
2-587-505-01 SCREW
108
A-1132-412-A SERVO BOARD, COMPLETE
#4
7-627-552-87 SCREW, PRECISION +P 1.7X2.2
not supplied
(SENSOR board)
(SENSOR board)
not supplied
not supplied
not supplied
not supplied
#4
101
102
103
104
105
106
107
108
Ver. 1.1
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